Oquirrh to Terminal transmission line project

Project overview

This project is a 14-mile 345-kilovolt transmission line planned to run from the existing Oquirrh Substation in West Jordan to the existing Terminal Substation in Salt Lake City. This new transmission lines helps address growth and development in the Wasatch Front by increasing transfer capability, upgrading system capacity and improving reliability for customers.

About the project

The transmission system between the Mona area and the Wasatch Front is constrained and the current transmission is fully utilized. This line is necessary in order to meet anticipated customer load and improve service reliability across areas along the Wasatch Front. This project will increase transfer capability and support growth in the area, while facilitating the interconnection of additional renewable energy capacity in the region. 

Jurisdictions in the project area include Salt Lake City, West Valley City, West Jordan City and Kearns (Greater Salt Lake Municipal Services District). 

This 14-mile-long transmission project will assist in mitigating the transmission constraint between the Mona area and the Wasatch Front. The project will involve the following: 

Project map

Oquirrh to Terminal Project Overview Map

Project status

The project is currently in the construction phase. Rocky Mountain Power completed the approval process with the local jurisdictions and is ready to construct the 345 kV electric power transmission line from the Oquirrh Substation in West Jordan to the Terminal Substation in Salt Lake City. The scheduled start date is July 8, 2024.  

Notices have been sent to property owners along the route to inform them of the construction activities that will be performed. During the construction period, there may be temporary disruptions in the vicinity, and members of nearby communities may be able to hear and see some of the work being done. 

Work will typically be performed during the hours of 7 a.m. and 6 p.m. and we will do our best to limit the noise and inconvenience throughout the project duration. 

If you have any questions or concerns during the construction period, you may contact us at:  

• Brian Young, Right of Way Agent, PacifiCorp (801) 220-2516
• Spencer Fowler, Project Manager, PacifiCorp (801) 200-4705
• Carson Crosby, Contractor, EC Source (623) 866-3174

Project timeline

Updated July 17, 2024